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Park maintenance isn't just a walk in the... well, you know where we're going with this.
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Math 3: Arrays Around Us 49 Views
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Description:
What did the mathematician ask her boss for on her birthday? Arrays.
Transcript
- 00:12
A lot of the stuff you see in math class can also be seen in the [students sitting in a maths class]
- 00:15
outside world and no we don't mean running into your math teacher at the
- 00:18
grocery store for example we can use addition to figure out how much our
- 00:22
groceries will cost and subtraction if we need to put back a few tubs of ice [a woman carrying lots of tubs of ice cream]
- 00:25
cream sometimes parents just don't understand the value of having a spare
Full Transcript
- 00:29
20 liters of ice cream lying around another thing we might see in the real
- 00:32
world array an array is an arrangement of objects into rows and columns you
- 00:37
might have seen an array of dots with four rows and five columns as a way to [green dots in 4 rows and 5 columns]
- 00:41
illustrate the number 20 there are plenty of other kinds of arrays we can
- 00:44
find in the real world one common example of an array is a carton of a
- 00:48
dozen eggs this carton has two rows and six columns which helps us keep all 12 [a carton of 12 eggs depicting an array]
- 00:52
eggs in the protected comfort of an array nice and snug another non
- 00:57
array-based way of transporting eggs like a big sack aren't exactly the best
- 01:00
of ideas well unless you really like having a big stack of broken shells and
- 01:04
yolk YUM we see another example of an array in this muffin tin this tin has [an array of muffins on an oven tray]
- 01:09
three rows and five columns however unlike our carton of eggs there isn't a
- 01:13
big number on the side of our tin telling us how many muffins it contains
- 01:16
since we can't see a number anywhere we should just throw out the tin and stick [a man throwing out a tin of muffins in the trash]
- 01:20
with foods that are more clearly labeled not so fast we can use a bit of math to
- 01:24
figure it out we see that each row contains five muffins and we see that
- 01:28
there are also three rows now if we multiply 5 by 3 we see the tin contains [multiplication of 5 times 3 for an array of muffins]
- 01:33
a total of fifteen muffins and luckily the garbage contains zero no ones
- 01:37
favorite flavor of muffin is trash well except Mr. Raccoon over here [a raccoon eating a muffin in the trash]
- 01:44
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